/*
 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package com.sun.java.swing.plaf.motif;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;

import javax.swing.JComponent;
import javax.swing.JSlider;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicSliderUI;

import static sun.swing.SwingUtilities2.drawHLine;
import static sun.swing.SwingUtilities2.drawVLine;

/**
 * Motif Slider
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases.  The current serialization support is appropriate
 * for short term storage or RMI between applications running the same
 * version of Swing.  A future release of Swing will provide support for
 * long term persistence.
 *
 * @author Jeff Dinkins
 */
public class MotifSliderUI extends BasicSliderUI {

  static final Dimension PREFERRED_HORIZONTAL_SIZE = new Dimension(164, 15);
  static final Dimension PREFERRED_VERTICAL_SIZE = new Dimension(15, 164);

  static final Dimension MINIMUM_HORIZONTAL_SIZE = new Dimension(43, 15);
  static final Dimension MINIMUM_VERTICAL_SIZE = new Dimension(15, 43);

  /**
   * MotifSliderUI Constructor
   */
  public MotifSliderUI(JSlider b) {
    super(b);
  }

  /**
   * create a MotifSliderUI object
   */
  public static ComponentUI createUI(JComponent b) {
    return new MotifSliderUI((JSlider) b);
  }

  public Dimension getPreferredHorizontalSize() {
    return PREFERRED_HORIZONTAL_SIZE;
  }

  public Dimension getPreferredVerticalSize() {
    return PREFERRED_VERTICAL_SIZE;
  }

  public Dimension getMinimumHorizontalSize() {
    return MINIMUM_HORIZONTAL_SIZE;
  }

  public Dimension getMinimumVerticalSize() {
    return MINIMUM_VERTICAL_SIZE;
  }

  protected Dimension getThumbSize() {
    if (slider.getOrientation() == JSlider.HORIZONTAL) {
      return new Dimension(30, 15);
    } else {
      return new Dimension(15, 30);
    }
  }

  public void paintFocus(Graphics g) {
  }

  public void paintTrack(Graphics g) {
  }

  public void paintThumb(Graphics g) {
    Rectangle knobBounds = thumbRect;

    int x = knobBounds.x;
    int y = knobBounds.y;
    int w = knobBounds.width;
    int h = knobBounds.height;

    if (slider.isEnabled()) {
      g.setColor(slider.getForeground());
    } else {
      // PENDING(jeff) - the thumb should be dithered when disabled
      g.setColor(slider.getForeground().darker());
    }

    if (slider.getOrientation() == JSlider.HORIZONTAL) {
      g.translate(x, knobBounds.y - 1);

      // fill
      g.fillRect(0, 1, w, h - 1);

      // highlight
      g.setColor(getHighlightColor());
      drawHLine(g, 0, w - 1, 1);      // top
      drawVLine(g, 0, 1, h);          // left
      drawVLine(g, w / 2, 2, h - 1);  // center

      // shadow
      g.setColor(getShadowColor());
      drawHLine(g, 0, w - 1, h);      // bottom
      drawVLine(g, w - 1, 1, h);      // right
      drawVLine(g, w / 2 - 1, 2, h);  // center

      g.translate(-x, -(knobBounds.y - 1));
    } else {
      g.translate(knobBounds.x - 1, 0);

      // fill
      g.fillRect(1, y, w - 1, h);

      // highlight
      g.setColor(getHighlightColor());
      drawHLine(g, 1, w, y);             // top
      drawVLine(g, 1, y + 1, y + h - 1); // left
      drawHLine(g, 2, w - 1, y + h / 2); // center

      // shadow
      g.setColor(getShadowColor());
      drawHLine(g, 2, w, y + h - 1);        // bottom
      drawVLine(g, w, y + h - 1, y);        // right
      drawHLine(g, 2, w - 1, y + h / 2 - 1);// center

      g.translate(-(knobBounds.x - 1), 0);
    }
  }
}
